VIEWREAL Dog Hole Clamp 3/4" Aluminum Bench Dog Clamp, 2 Pack Compact & Easy-to-Use Holdfast Clamps, Anti-Twist for Workbenches with 19mm Holes,Hold Down Clamps for Woodworkers & Hobbyists - Amazon.com
POWERTEC 71530-P2 Workbench Holdfast Clamp for Woodworking, Adjustable Hold Down Clamping, Bench Dog Clamp for 3/4 Inch (19mm) Dog Hole MFT Table, 2 Pack - Amazon.com
Adjustable Workbench Bench Dog Screw Clamp, Fits 3/4“ Dog Holes, Full — Taylor Toolworks